9 
embraces the base of the capsule is also quite typical. The cilia 
are slender as long as the teeth and slightly appendiculate; but 
this too is found to agree with Limpricht’s description of O. Schim- 
peri. The calyptra has a few short hairs at apex, and on the 
whole the specimens agree perhaps better with O. brachytrichum 
than with European specimes of O. Schimperi. 
ORTHOTRICHUM CANADENSE Br. & Sch. Lond. Journ. Bot. 2: 667 
(1843), non Sullivant’s Mosses U. S. 34 (1856). 
This species was described from Drummond’s North Ameri- 
can mosses as follows: 
“149-151. Orthotrichum affine var. capsulis exsertis, is more 
nearly related to O. patens but differs, however from this species 
remarkably in its smaller capsules, which are longer pedunculated 
and in the rusty red-colored teeth of the peristome: it is without 
doubt a new species, for which we propose the name O. canadense. 
No. 149 differs from 151 only in having longer stems.” 
We have been favored by the Director of the Royal Botanic 
Gardens at Kew with the privilege of seeing a portion of the type, 
which is labeled “Orthotrichum Canadense (O. affine var.) Ober 
Canada,” and matches Number 1 51 in our set of Drummond's 
mosses which is labeled Q. affine var. capsulis exsertis (an species 
distincta ?), Hab.—Upper Canada, and about Lake Superior ; upon 
trees.” It will be seen from the citation of the names and locali- 
ties that Bruch and Schimper had reference principally to 151, and 
the characters of the specimens confirm this supposition. They 
refer to 149 secondarily and seemingly without careful compari- 
Son, for our specimens at least are not the same species as 151. 
The specimens from Kew as well as our 151 are older, and two 
out of three capsules are without peristome, but the third shows a 
simple peristome of sixteen striolate teeth, the capsules are. 
exserted and the walls have eight prominent ridges, besides nar- 
Tower intermediate ones. The stomata are immersed. 
I do not know how to account for the intermediate ridges, ree 
@ species said to be allied to O. patens, for they usually indicate 
one of the rock species such as O. anomalum, but as these capsules Se 
re strangulate, smaller, and less exserted than those of that e 
Species, and furthermore were said to grow on trees, we must ¢ 
clude that hypothesis. The separation of the teeth and ibse 
_ Of cilia may be accounted for by age, and indeec 
